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Finding the Fourth Proportional to 315,066.80, 472,600.20 and 310,919.60

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Solution

The fourth proportional to 315,066.80, 472,600.20 and 310,919.60 is: 466,379.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,066.80 : 472,600.20 = 310,919.60 : x
  2. Step 2: Convert to fraction form
    315,066.80/472,600.20 = 310,919.60/x
  3. Step 3: Cross multiply
    315,066.80x = 472,600.20 × 310,919.60
  4. Step 4: Simplify right side
    315,066.80x = 146,940,665,143.92
  5. Step 5: Solve for x
    x = 146,940,665,143.92/315,066.80
  6. Step 6: Final answer
    x = 466,379.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.